The paper presents some generalities regarding business communication followed by a brief outline of the latter subject taught at the Faculty of Engineering Faculty, Sibiu, inflicting on its role upon the education of the future engineers. It also evaluates the effect of the skills acquired by students in the field of business communication regarding the valorization of specific professional competences. Based on several tests and surveys, this work presents aspects regarding the improvement of certain special skills such as: group communication, meetings, interpersonal, public and written communication. It seeks to evince communication-related issues which the students find most helpful in finding a job and also in their day-to-day business activity. To sum up, it is obvious that a continuous improvement of students’ knowledge and abilities in this field is imperative, so that the future specialists make the most of their technical knowledge.
Identifying birds in audio signals has been a challenge because the marking of certain species influences their classification. The proposed method consists of a mixture of sound processing for extracting useful signals from longer recordings with dynamic energy thresholds, image processing such as filtering and compression through image resizing for the treatment of the spectrogram and multilayer perceptron networks for the classification. The method shows encouraging results and flexibility, allowing the extension to a larger number of species, as well as applications to other fields involving sound or sound-like signals.
The paper introduces some considerations on theoretical aspects focusing on increasing the degree of customer satisfaction in the field of public transportation, aiming to improve public relation by augmenting satisfaction. Ensuing the introduction of certain general aspects of the issue, opportunities offered by the EN 13816 European norm are presented, the latter providing useful instruments for improving the quality of public transportation services (the quality loop and the ways of evaluation of internal and external quality of transportation services). Throughout the paper, there have been briefly introduced characteristic elements of the European norm, its objectives, the preconditions for the application of the norm mentioned and the benefits of its implementation.
This paper presents a technological breakthrough in the manufacturing of miniature revolving surfaces using wire electrical discharge machining (WEDM). The principle of manufacturing highlights specific aspects of the technology concerning the necessary equipment and the steps taken during production. The process of manufacturing is presented mathematically, concerning the surplus of material that is to be removed. The technological solution proposed was validated in practice and it features some experimental results that were obtained. This solution puts forward a new alternative to the manufacturing of small-sized revolving surfaces for hard and extra-hard material parts.
In this paper is presented a model of locomotion system with omnidirectional wheels for mobile platforms for the industrial environment. In the first part of the paper is made a brief description of the type of wheels used, what are their advantages and disadvantages. In the paper the emphasis is placed on omnidirectional wheels of Mecanum type and all their possibilities of movement are presented. Also presented is the design and sizing of a complete locomotion system for an omnidirectional mobile platform that serves the industrial environment. The chosen kinematic scheme and the calculation of the dimensioning of the necessary motors, the determination of the forces acting on the platform when moving in horizontal plane and the determination of the forces acting on the platform when moving on the ramp are presented.
Single point incremental forming (SPIF) is a cold metal forming process, which is well known among researchers in the last years. This process differentiates itself from other classic cold forming processes due to the relatively low number of elements involved in the process, being suitable for small batches and prototypes parts. Taking advantage of their high flexibility, but at the same time losing the rigidity of CNC machines, industrial robots can be used in the incremental forming process, a process known as “roboforming”. One area of interest among researchers is represented by the forces which take place during the process, because they dictate whether an equipment is suitable or not in regards with material strenght. The aim of this paper is to investigate the influence of different toolpaths over the forces measured in SPIF which took place when DC04 sheet metal blanks were deformed with the help of KUKA KR210 robot.
Structural Health Monitoring (SHM) represents a method of monitoring and assessment of the structural state of a certain component, in terms of damage identification, damage classification and monitoring of deformations and loads. The structure and purpose of different SHM methods are presented, with a review of the main types of sensors and monitoring methods available. Recent trends in implementing SHM methods in composite applications are presented, especially in aerospace structures. Also, the main advantages and disadvantages of SHM methods are being highlighted and the potential that these systems have in the technological future. The main purpose of the presented survey is to assess the best method to realize a future model of a new composite blade, equipped with sensors, that will replace the current metal tail rotor blade which equips the IAR330 military transport helicopter used by the Romanian Air Force.
This paper presents a brief description of the main systems found in a platform or in an autonomous omnidirectional mobile robot. Each system is described and presents its important role for the functionality of the robot and what are the advantages and disadvantages of using these systems. Concrete examples are presented for the omnidirectional locomotion system, the kinematics of the omnidirectional locomotion, the sensory system of the robot and the navigation systems that can be implemented. The paper wants to highlight the main systems that we must take into account in creating an autonomous mobile robot with omnidirectional wheels.